Hello,
This is the first incremental "smart" backup I have tried. The message during the backup now which has persisted unchanged for the last ten minutes is "Copying files from...
86,740 of 460,644 files evaluated, 1,250 files copied...2.82 GB evaluated, 2.38 GB already up to date, 367.82 MB copied." The progress bar isn't moving and when I try pusing the "stop" button, I get a message warning that I would leave the target volume in an unknown state. Suggestions?
Frank
Here is log:

It's hard to say what might be happening here, other than that you've got either a large or constantly-being-modified file in /Users. If you'll drop me a line to support, I'll give you a command that should help you determine what that is.